#CH_2H_3O_2(aq) + H_2O(l) rightleftharpoons H_3O^+ + C_2H_3O_2^-(aq)#. #K_c = 1.8 X 10^-5# at 25 #"^oC#. If a solution initially contains 0.210 M #HC_2H_3O_2#, what is the equilibrium concentration of #H_3O^+# at 25 #"^oC#?
1 Answer
Oct 15, 2016
Explanation:
Set up an ICE table based on concentrations in mol/l:
Applying the equilibrium law:
Because the dissociation is so small we can make the approximation: